Painting tool



FIG. 1 is a front perspective view of a painting tool, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a plan view thereof; and,

FIG. 7 is a bottom view thereof. 

The ornamental design for a painting tool, as shown and described. 